Describe a model for explaining how light is transmitted through glass
What will be an ideal response?
Answer: According to the model of light presented in the text, when a photon is incident on a glass surface it is absorbed by a glass molecule or atom and forced into vibration. This vibration results in the emission of an indistinguishable photon, which travels to the next atom or molecule to repeat the process. A cascading process of absorption and reemission occurs until the glass molecule at the far surface absorbs and reemits an identical photon.
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A charge q1 is placed on the y-axis at y = 4.0 m and the resulting potential at the position (3.0 m, 4.0 m) is 3.0 V. The charge q1 is removed and a charge q2 is placed on the x-axis at x = 3.0 m and the resulting potential at the position (3.0 m, 4.0 m) is 4.0 V. If both charges are in place simultaneously, what is the potential at (3.0 m, 4.0 m)?
A. 1.0 V B. 3.5 V C. 5.0 V D. 7.0 V E. 12 V
Of all the chemical elements, the one most crucial to the complexity of life is:
A) hydrogen. B) oxygen. C) sulfur. D) carbon. E) nitrogen.
Which planet (besides Earth) has been visited by the largest number of robotic spacecraft?
A) Mars B) Venus C) Jupiter D) Saturn
A sound wave coming from a tuba has a wavelength of 0.674 m and travels to your ears at a speed of 345 m/s. What is the frequency of the sound you hear?
a. 512 Hz c. 230 Hz b. 1/517 Hz d. 1/230 Hz